initial commit, 4.5 stable

thirdparty/libwebp/patches/0001-msvc-node-debug-rename.patch

@@ -0,0 +1,14 @@
+diff --git a/thirdparty/libwebp/src/enc/quant_enc.c b/thirdparty/libwebp/src/enc/quant_enc.c
+index 6d8202d277..302e8047f2 100644
+--- a/thirdparty/libwebp/src/enc/quant_enc.c
++++ b/thirdparty/libwebp/src/enc/quant_enc.c
+@@ -556,6 +556,9 @@ static void AddScore(VP8ModeScore* WEBP_RESTRICT const dst,
+ //------------------------------------------------------------------------------
+ // Performs trellis-optimized quantization.
+ 
++// Prevents Visual Studio debugger from using this Node struct in place of the Godot Node class.
++#define Node Node_libwebp_quant
++
+ // Trellis node
+ typedef struct {
+   int8_t prev;            // best previous node

thirdparty/libwebp/patches/0002-msvc-arm64-fpstrict.patch

@@ -0,0 +1,16 @@
+diff --git a/thirdparty/libwebp/sharpyuv/sharpyuv_gamma.c b/thirdparty/libwebp/sharpyuv/sharpyuv_gamma.c
+index 09028428ac..6f1a88bf1a 100644
+--- a/thirdparty/libwebp/sharpyuv/sharpyuv_gamma.c
++++ b/thirdparty/libwebp/sharpyuv/sharpyuv_gamma.c
+@@ -26,7 +26,11 @@ static uint32_t kGammaToLinearTabS[GAMMA_TO_LINEAR_TAB_SIZE + 2];
+ #define LINEAR_TO_GAMMA_TAB_SIZE (1 << LINEAR_TO_GAMMA_TAB_BITS)
+ static uint32_t kLinearToGammaTabS[LINEAR_TO_GAMMA_TAB_SIZE + 2];
+ 
++#if defined(_MSC_VER)
++static const double kGammaF = 2.222222222222222;
++#else
+ static const double kGammaF = 1. / 0.45;
++#endif
+ #define GAMMA_TO_LINEAR_BITS 16
+ 
+ static volatile int kGammaTablesSOk = 0;

thirdparty/libwebp/patches/0003-clang-cl-sse2-sse41.patch

@@ -0,0 +1,19 @@
+diff --git a/thirdparty/libwebp/src/dsp/cpu.h b/thirdparty/libwebp/src/dsp/cpu.h
+index c86540f280..4dbe607aec 100644
+--- a/thirdparty/libwebp/src/dsp/cpu.h
++++ b/thirdparty/libwebp/src/dsp/cpu.h
+@@ -47,12 +47,12 @@
+ // x86 defines.
+ 
+ #if !defined(HAVE_CONFIG_H)
+-#if defined(_MSC_VER) && _MSC_VER > 1310 && \
++#if defined(_MSC_VER) && !defined(__clang__) && _MSC_VER > 1310 && \
+     (defined(_M_X64) || defined(_M_IX86))
+ #define WEBP_MSC_SSE2  // Visual C++ SSE2 targets
+ #endif
+ 
+-#if defined(_MSC_VER) && _MSC_VER >= 1500 && \
++#if defined(_MSC_VER) && !defined(__clang__) && _MSC_VER >= 1500 && \
+     (defined(_M_X64) || defined(_M_IX86))
+ #define WEBP_MSC_SSE41  // Visual C++ SSE4.1 targets
+ #endif